Composite graphite particles and production method therefor, and cathode material of lithium ion secondary battery and lithium ion secondary battery using this

Composite graphite particles and production method therefor, and cathode material of lithium ion secondary battery and lithium ion secondary battery using this

  • CN 101,350,407 A
  • Filed: 12/18/2003
  • Published: 01/21/2009
  • Est. Priority Date: 12/19/2002
  • Status: Active Application
First Claim
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1. the negative material of a lithium rechargeable battery, it comprises composite graphite particles, it is characterized in that, and described composite graphite particles is at the interplanar distance d of X-ray diffraction 002Less than 0.337nm and use at least a portion surface of granulation fossil China ink of a large amount of flaky graphites;

  • have crystallinity and be lower than the material with carbon element of this graphite;

    the aspect ratio of this composite graphite particles is below 3;

    0.5~

    20 quality % of this composite graphite particles is this material with carbon element;

    in the Raman spectrum of this composite graphite particles, 1360cm -1Peak strength I 1360With respect to 1580cm -1Peak strength I 1580Ratio I 1360/ I 1580More than 0.1 and less than 0.3.

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